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![Cal Spa OC850R1A Circuit Board — Expert Replacement Parts
Your hot tub deserves the right fix. Western Tub and Pool supplies genuine and compatible Cal Spa circuit boards, so you can get back to soaking faster.
Shop and order at Western Tub and Pool
[Call us: 1-855-248-0777] [Email: fixmytub@gmail.com]
What You Need to Know About the OC850R1A Circuit Board
The Cal Spa OC850R1A Circuit Board (Part No. ELE09100330) is a key control component used across a wide range of Cal Spas hot tub models. It manages the core functions of your spa, including heating, jet control, and system diagnostics.
Important Notice: This board is no longer available as a standalone unit. In most cases, a retro-fit system replacement will work as an effective alternative. Contact our team to find the best retrofit option for your specific model.
Key Product Details
Specification
Details
Part Name
Cal Spa OC850R1A Circuit Board
Part Number
ELE09100330
Condition
New (Retrofit/Replacement)
Availability
Subject to warehouse region
Cross-Reference Numbers
OC850R1A, ELE09100330
Note on Dimensions and Weight: Dimensions and shipping weight vary depending on the retrofit kit supplied. Contact us directly for exact specifications before ordering.
Compatible Hot Tub Models
The OC850R1A circuit board and its compatible retrofit replacements are used across a broad range of Cal Spas models, including but not limited to:
Cal Spas series using the OC850 control system
Models paired with ELE09100330 control boards
Various Cal Spas spa and hot tub models from the late 1990s through mid-2000s production runs
Not sure if this part fits your model? Send us your hot tub's make, model, and serial number, and we'll confirm compatibility before you order.
[Email us your details]
Compatible Controls & Related Parts
This circuit board is associated with the following control systems and replacement parts:
Compatible Controls: OC850 series control systems
Cross-Reference Numbers: OC850R1A | ELE09100330
Related Repair Parts: Topside controls, heater elements, pumps, and sensors that work in conjunction with the OC850 control system
Browse our full catalogue online or call us to find all associated parts for your repair.
[View Our Online Catalogue]
Frequently Asked Questions
Is the OC850R1A circuit board still available as an original part?
No, this board has been discontinued by the manufacturer. However, in most cases a retrofit system replacement can restore full functionality to your spa. Our team will guide you through the best options for your model.
How do I know if this is the right part for my hot tub?
Check your existing circuit board for the part number OC850R1A or ELE09100330. If you're unsure, send us a photo of your board along with your spa's make, model, and serial number, and we'll verify the fit for you.
How long will shipping take?
Shipping times depend on which regional warehouse fulfills your order. Western Tub and Pool ships internationally from warehouses in the U.S., Canada, Europe, and Asia. The suffix on your part number indicates the region of origin:
U = United States
C = Canada
E = Europe
A = Asia
Some parts may be available from multiple regions, which can affect lead times and shipping costs.
Can I order online or by phone?
Both! You can shop and order at Western Tub and Pool via our online catalogue, by calling 1-855-248-0777, or by emailing fixmytub@gmail.com.
What if I don't know my part number?
No problem. Send us a photo of the part, along with your hot tub's make, model, and serial number, and our team will identify the correct replacement for you.
Why Shop with Western Tub and Pool?
Hard-to-Find Parts: We specialize in discontinued and specialty spa components that are difficult to source elsewhere.
International Shipping: We ship from warehouses across the U.S., Canada, Europe, and Asia to serve customers worldwide.
Expert Guidance: Not sure what you need? Our knowledgeable team will help you find the right part or retrofit solution.
Direct Support: Reach a real person by phone or email — no complicated ticketing systems.
Get the Right Part, the First Time
Don't waste time searching for a discontinued circuit board. Our team at Western Tub and Pool specializes in hard-to-find hot tub parts and will help you find the right retrofit solution for your Cal Spa.
Shop and order at Western Tub and Pool
[Call 1-855-248-0777] [Shop Online]
Can't find what you're looking for? Send us an email at fixmytub@gmail.com with your part number, or a photo of the part along with your hot tub's make, model, and serial number. We'll track it down for you.](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/1280x1280/products/4506/6769/ELE09100330__16229.1786476673.PNG?c=2 "Cal Spa OC850R1A Circuit Board — Expert Replacement Parts
Your hot tub deserves the right fix. Western Tub and Pool supplies genuine and compatible Cal Spa circuit boards, so you can get back to soaking faster.
Shop and order at Western Tub and Pool
[Call us: 1-855-248-0777] [Email: fixmytub@gmail.com]
What You Need to Know About the OC850R1A Circuit Board
The Cal Spa OC850R1A Circuit Board (Part No. ELE09100330) is a key control component used across a wide range of Cal Spas hot tub models. It manages the core functions of your spa, including heating, jet control, and system diagnostics.
Important Notice: This board is no longer available as a standalone unit. In most cases, a retro-fit system replacement will work as an effective alternative. Contact our team to find the best retrofit option for your specific model.
Key Product Details
Specification
Details
Part Name
Cal Spa OC850R1A Circuit Board
Part Number
ELE09100330
Condition
New (Retrofit/Replacement)
Availability
Subject to warehouse region
Cross-Reference Numbers
OC850R1A, ELE09100330
Note on Dimensions and Weight: Dimensions and shipping weight vary depending on the retrofit kit supplied. Contact us directly for exact specifications before ordering.
Compatible Hot Tub Models
The OC850R1A circuit board and its compatible retrofit replacements are used across a broad range of Cal Spas models, including but not limited to:
Cal Spas series using the OC850 control system
Models paired with ELE09100330 control boards
Various Cal Spas spa and hot tub models from the late 1990s through mid-2000s production runs
Not sure if this part fits your model? Send us your hot tub's make, model, and serial number, and we'll confirm compatibility before you order.
[Email us your details]
Compatible Controls & Related Parts
This circuit board is associated with the following control systems and replacement parts:
Compatible Controls: OC850 series control systems
Cross-Reference Numbers: OC850R1A | ELE09100330
Related Repair Parts: Topside controls, heater elements, pumps, and sensors that work in conjunction with the OC850 control system
Browse our full catalogue online or call us to find all associated parts for your repair.
[View Our Online Catalogue]
Frequently Asked Questions
Is the OC850R1A circuit board still available as an original part?
No, this board has been discontinued by the manufacturer. However, in most cases a retrofit system replacement can restore full functionality to your spa. Our team will guide you through the best options for your model.
How do I know if this is the right part for my hot tub?
Check your existing circuit board for the part number OC850R1A or ELE09100330. If you're unsure, send us a photo of your board along with your spa's make, model, and serial number, and we'll verify the fit for you.
How long will shipping take?
Shipping times depend on which regional warehouse fulfills your order. Western Tub and Pool ships internationally from warehouses in the U.S., Canada, Europe, and Asia. The suffix on your part number indicates the region of origin:
U = United States
C = Canada
E = Europe
A = Asia
Some parts may be available from multiple regions, which can affect lead times and shipping costs.
Can I order online or by phone?
Both! You can shop and order at Western Tub and Pool via our online catalogue, by calling 1-855-248-0777, or by emailing fixmytub@gmail.com.
What if I don't know my part number?
No problem. Send us a photo of the part, along with your hot tub's make, model, and serial number, and our team will identify the correct replacement for you.
Why Shop with Western Tub and Pool?
Hard-to-Find Parts: We specialize in discontinued and specialty spa components that are difficult to source elsewhere.
International Shipping: We ship from warehouses across the U.S., Canada, Europe, and Asia to serve customers worldwide.
Expert Guidance: Not sure what you need? Our knowledgeable team will help you find the right part or retrofit solution.
Direct Support: Reach a real person by phone or email — no complicated ticketing systems.
Get the Right Part, the First Time
Don't waste time searching for a discontinued circuit board. Our team at Western Tub and Pool specializes in hard-to-find hot tub parts and will help you find the right retrofit solution for your Cal Spa.
Shop and order at Western Tub and Pool
[Call 1-855-248-0777] [Shop Online]
Can't find what you're looking for? Send us an email at fixmytub@gmail.com with your part number, or a photo of the part along with your hot tub's make, model, and serial number. We'll track it down for you.")
![Cal Spa OC850R1A Circuit Board — Expert Replacement Parts
Your hot tub deserves the right fix. Western Tub and Pool supplies genuine and compatible Cal Spa circuit boards, so you can get back to soaking faster.
Shop and order at Western Tub and Pool
[Call us: 1-855-248-0777] [Email: fixmytub@gmail.com]
What You Need to Know About the OC850R1A Circuit Board
The Cal Spa OC850R1A Circuit Board (Part No. ELE09100330) is a key control component used across a wide range of Cal Spas hot tub models. It manages the core functions of your spa, including heating, jet control, and system diagnostics.
Important Notice: This board is no longer available as a standalone unit. In most cases, a retro-fit system replacement will work as an effective alternative. Contact our team to find the best retrofit option for your specific model.
Key Product Details
Specification
Details
Part Name
Cal Spa OC850R1A Circuit Board
Part Number
ELE09100330
Condition
New (Retrofit/Replacement)
Availability
Subject to warehouse region
Cross-Reference Numbers
OC850R1A, ELE09100330
Note on Dimensions and Weight: Dimensions and shipping weight vary depending on the retrofit kit supplied. Contact us directly for exact specifications before ordering.
Compatible Hot Tub Models
The OC850R1A circuit board and its compatible retrofit replacements are used across a broad range of Cal Spas models, including but not limited to:
Cal Spas series using the OC850 control system
Models paired with ELE09100330 control boards
Various Cal Spas spa and hot tub models from the late 1990s through mid-2000s production runs
Not sure if this part fits your model? Send us your hot tub's make, model, and serial number, and we'll confirm compatibility before you order.
[Email us your details]
Compatible Controls & Related Parts
This circuit board is associated with the following control systems and replacement parts:
Compatible Controls: OC850 series control systems
Cross-Reference Numbers: OC850R1A | ELE09100330
Related Repair Parts: Topside controls, heater elements, pumps, and sensors that work in conjunction with the OC850 control system
Browse our full catalogue online or call us to find all associated parts for your repair.
[View Our Online Catalogue]
Frequently Asked Questions
Is the OC850R1A circuit board still available as an original part?
No, this board has been discontinued by the manufacturer. However, in most cases a retrofit system replacement can restore full functionality to your spa. Our team will guide you through the best options for your model.
How do I know if this is the right part for my hot tub?
Check your existing circuit board for the part number OC850R1A or ELE09100330. If you're unsure, send us a photo of your board along with your spa's make, model, and serial number, and we'll verify the fit for you.
How long will shipping take?
Shipping times depend on which regional warehouse fulfills your order. Western Tub and Pool ships internationally from warehouses in the U.S., Canada, Europe, and Asia. The suffix on your part number indicates the region of origin:
U = United States
C = Canada
E = Europe
A = Asia
Some parts may be available from multiple regions, which can affect lead times and shipping costs.
Can I order online or by phone?
Both! You can shop and order at Western Tub and Pool via our online catalogue, by calling 1-855-248-0777, or by emailing fixmytub@gmail.com.
What if I don't know my part number?
No problem. Send us a photo of the part, along with your hot tub's make, model, and serial number, and our team will identify the correct replacement for you.
Why Shop with Western Tub and Pool?
Hard-to-Find Parts: We specialize in discontinued and specialty spa components that are difficult to source elsewhere.
International Shipping: We ship from warehouses across the U.S., Canada, Europe, and Asia to serve customers worldwide.
Expert Guidance: Not sure what you need? Our knowledgeable team will help you find the right part or retrofit solution.
Direct Support: Reach a real person by phone or email — no complicated ticketing systems.
Get the Right Part, the First Time
Don't waste time searching for a discontinued circuit board. Our team at Western Tub and Pool specializes in hard-to-find hot tub parts and will help you find the right retrofit solution for your Cal Spa.
Shop and order at Western Tub and Pool
[Call 1-855-248-0777] [Shop Online]
Can't find what you're looking for? Send us an email at fixmytub@gmail.com with your part number, or a photo of the part along with your hot tub's make, model, and serial number. We'll track it down for you.](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/100x100/products/4506/6769/ELE09100330__16229.1786476673.PNG?c=2 "Cal Spa OC850R1A Circuit Board — Expert Replacement Parts
Your hot tub deserves the right fix. Western Tub and Pool supplies genuine and compatible Cal Spa circuit boards, so you can get back to soaking faster.
Shop and order at Western Tub and Pool
[Call us: 1-855-248-0777] [Email: fixmytub@gmail.com]
What You Need to Know About the OC850R1A Circuit Board
The Cal Spa OC850R1A Circuit Board (Part No. ELE09100330) is a key control component used across a wide range of Cal Spas hot tub models. It manages the core functions of your spa, including heating, jet control, and system diagnostics.
Important Notice: This board is no longer available as a standalone unit. In most cases, a retro-fit system replacement will work as an effective alternative. Contact our team to find the best retrofit option for your specific model.
Key Product Details
Specification
Details
Part Name
Cal Spa OC850R1A Circuit Board
Part Number
ELE09100330
Condition
New (Retrofit/Replacement)
Availability
Subject to warehouse region
Cross-Reference Numbers
OC850R1A, ELE09100330
Note on Dimensions and Weight: Dimensions and shipping weight vary depending on the retrofit kit supplied. Contact us directly for exact specifications before ordering.
Compatible Hot Tub Models
The OC850R1A circuit board and its compatible retrofit replacements are used across a broad range of Cal Spas models, including but not limited to:
Cal Spas series using the OC850 control system
Models paired with ELE09100330 control boards
Various Cal Spas spa and hot tub models from the late 1990s through mid-2000s production runs
Not sure if this part fits your model? Send us your hot tub's make, model, and serial number, and we'll confirm compatibility before you order.
[Email us your details]
Compatible Controls & Related Parts
This circuit board is associated with the following control systems and replacement parts:
Compatible Controls: OC850 series control systems
Cross-Reference Numbers: OC850R1A | ELE09100330
Related Repair Parts: Topside controls, heater elements, pumps, and sensors that work in conjunction with the OC850 control system
Browse our full catalogue online or call us to find all associated parts for your repair.
[View Our Online Catalogue]
Frequently Asked Questions
Is the OC850R1A circuit board still available as an original part?
No, this board has been discontinued by the manufacturer. However, in most cases a retrofit system replacement can restore full functionality to your spa. Our team will guide you through the best options for your model.
How do I know if this is the right part for my hot tub?
Check your existing circuit board for the part number OC850R1A or ELE09100330. If you're unsure, send us a photo of your board along with your spa's make, model, and serial number, and we'll verify the fit for you.
How long will shipping take?
Shipping times depend on which regional warehouse fulfills your order. Western Tub and Pool ships internationally from warehouses in the U.S., Canada, Europe, and Asia. The suffix on your part number indicates the region of origin:
U = United States
C = Canada
E = Europe
A = Asia
Some parts may be available from multiple regions, which can affect lead times and shipping costs.
Can I order online or by phone?
Both! You can shop and order at Western Tub and Pool via our online catalogue, by calling 1-855-248-0777, or by emailing fixmytub@gmail.com.
What if I don't know my part number?
No problem. Send us a photo of the part, along with your hot tub's make, model, and serial number, and our team will identify the correct replacement for you.
Why Shop with Western Tub and Pool?
Hard-to-Find Parts: We specialize in discontinued and specialty spa components that are difficult to source elsewhere.
International Shipping: We ship from warehouses across the U.S., Canada, Europe, and Asia to serve customers worldwide.
Expert Guidance: Not sure what you need? Our knowledgeable team will help you find the right part or retrofit solution.
Direct Support: Reach a real person by phone or email — no complicated ticketing systems.
Get the Right Part, the First Time
Don't waste time searching for a discontinued circuit board. Our team at Western Tub and Pool specializes in hard-to-find hot tub parts and will help you find the right retrofit solution for your Cal Spa.
Shop and order at Western Tub and Pool
[Call 1-855-248-0777] [Shop Online]
Can't find what you're looking for? Send us an email at fixmytub@gmail.com with your part number, or a photo of the part along with your hot tub's make, model, and serial number. We'll track it down for you.")
Product Description
Cal Spa OC850R1A Circuit Board — Expert Replacement Parts
Your hot tub deserves the right fix. Western Tub and Pool supplies genuine and compatible Cal Spa circuit boards, so you can get back to soaking faster.
Shop and order at Western Tub and Pool
[Call us: 1-855-248-0777] [Email: fixmytub@gmail.com]
What You Need to Know About the OC850R1A Circuit Board
The Cal Spa OC850R1A Circuit Board (Part No. ELE09100330) is a key control component used across a wide range of Cal Spas hot tub models. It manages the core functions of your spa, including heating, jet control, and system diagnostics.
Important Notice: This board is no longer available as a standalone unit. In most cases, a retro-fit system replacement will work as an effective alternative. Contact our team to find the best retrofit option for your specific model.
Key Product Details
|
Specification |
Details |
|---|---|
|
Part Name |
Cal Spa OC850R1A Circuit Board |
|
Part Number |
ELE09100330 |
|
Condition |
New (Retrofit/Replacement) |
|
Availability |
Subject to warehouse region |
|
Cross-Reference Numbers |
OC850R1A, ELE09100330 |
Note on Dimensions and Weight: Dimensions and shipping weight vary depending on the retrofit kit supplied. Contact us directly for exact specifications before ordering.
Compatible Hot Tub Models
The OC850R1A circuit board and its compatible retrofit replacements are used across a broad range of Cal Spas models, including but not limited to:
- Cal Spas series using the OC850 control system
- Models paired with ELE09100330 control boards
- Various Cal Spas spa and hot tub models from the late 1990s through mid-2000s production runs
Not sure if this part fits your model? Send us your hot tub's make, model, and serial number, and we'll confirm compatibility before you order.
[Email us your details]
Compatible Controls & Related Parts
This circuit board is associated with the following control systems and replacement parts:
- Compatible Controls: OC850 series control systems
- Cross-Reference Numbers: OC850R1A | ELE09100330
- Related Repair Parts: Topside controls, heater elements, pumps, and sensors that work in conjunction with the OC850 control system
Browse our full catalogue online or call us to find all associated parts for your repair.
[View Our Online Catalogue]
Frequently Asked Questions
Is the OC850R1A circuit board still available as an original part?
No, this board has been discontinued by the manufacturer. However, in most cases a retrofit system replacement can restore full functionality to your spa. Our team will guide you through the best options for your model.
How do I know if this is the right part for my hot tub?
Check your existing circuit board for the part number OC850R1A or ELE09100330. If you're unsure, send us a photo of your board along with your spa's make, model, and serial number, and we'll verify the fit for you.
How long will shipping take?
Shipping times depend on which regional warehouse fulfills your order. Western Tub and Pool ships internationally from warehouses in the U.S., Canada, Europe, and Asia. The suffix on your part number indicates the region of origin:
- U = United States
- C = Canada
- E = Europe
- A = Asia
Some parts may be available from multiple regions, which can affect lead times and shipping costs.
Can I order online or by phone?
Both! You can shop and order at Western Tub and Pool via our online catalogue, by calling 1-855-248-0777, or by emailing fixmytub@gmail.com.
What if I don't know my part number?
No problem. Send us a photo of the part, along with your hot tub's make, model, and serial number, and our team will identify the correct replacement for you.
Why Shop with Western Tub and Pool?
- Hard-to-Find Parts: We specialize in discontinued and specialty spa components that are difficult to source elsewhere.
- International Shipping: We ship from warehouses across the U.S., Canada, Europe, and Asia to serve customers worldwide.
- Expert Guidance: Not sure what you need? Our knowledgeable team will help you find the right part or retrofit solution.
- Direct Support: Reach a real person by phone or email — no complicated ticketing systems.
Get the Right Part, the First Time
Don't waste time searching for a discontinued circuit board. Our team at Western Tub and Pool specializes in hard-to-find hot tub parts and will help you find the right retrofit solution for your Cal Spa.
Shop and order at Western Tub and Pool
[Call 1-855-248-0777] [Shop Online]
Can't find what you're looking for? Send us an email at fixmytub@gmail.com with your part number, or a photo of the part along with your hot tub's make, model, and serial number. We'll track it down for you.
![Cal Spa OC850R1A Circuit Board — Expert Replacement Parts
Your hot tub deserves the right fix. Western Tub and Pool supplies genuine and compatible Cal Spa circuit boards, so you can get back to soaking faster.
Shop and order at Western Tub and Pool
[Call us: 1-855-248-0777] [Email: fixmytub@gmail.com]
What You Need to Know About the OC850R1A Circuit Board
The Cal Spa OC850R1A Circuit Board (Part No. ELE09100330) is a key control component used across a wide range of Cal Spas hot tub models. It manages the core functions of your spa, including heating, jet control, and system diagnostics.
Important Notice: This board is no longer available as a standalone unit. In most cases, a retro-fit system replacement will work as an effective alternative. Contact our team to find the best retrofit option for your specific model.
Key Product Details
Specification
Details
Part Name
Cal Spa OC850R1A Circuit Board
Part Number
ELE09100330
Condition
New (Retrofit/Replacement)
Availability
Subject to warehouse region
Cross-Reference Numbers
OC850R1A, ELE09100330
Note on Dimensions and Weight: Dimensions and shipping weight vary depending on the retrofit kit supplied. Contact us directly for exact specifications before ordering.
Compatible Hot Tub Models
The OC850R1A circuit board and its compatible retrofit replacements are used across a broad range of Cal Spas models, including but not limited to:
Cal Spas series using the OC850 control system
Models paired with ELE09100330 control boards
Various Cal Spas spa and hot tub models from the late 1990s through mid-2000s production runs
Not sure if this part fits your model? Send us your hot tub's make, model, and serial number, and we'll confirm compatibility before you order.
[Email us your details]
Compatible Controls & Related Parts
This circuit board is associated with the following control systems and replacement parts:
Compatible Controls: OC850 series control systems
Cross-Reference Numbers: OC850R1A | ELE09100330
Related Repair Parts: Topside controls, heater elements, pumps, and sensors that work in conjunction with the OC850 control system
Browse our full catalogue online or call us to find all associated parts for your repair.
[View Our Online Catalogue]
Frequently Asked Questions
Is the OC850R1A circuit board still available as an original part?
No, this board has been discontinued by the manufacturer. However, in most cases a retrofit system replacement can restore full functionality to your spa. Our team will guide you through the best options for your model.
How do I know if this is the right part for my hot tub?
Check your existing circuit board for the part number OC850R1A or ELE09100330. If you're unsure, send us a photo of your board along with your spa's make, model, and serial number, and we'll verify the fit for you.
How long will shipping take?
Shipping times depend on which regional warehouse fulfills your order. Western Tub and Pool ships internationally from warehouses in the U.S., Canada, Europe, and Asia. The suffix on your part number indicates the region of origin:
U = United States
C = Canada
E = Europe
A = Asia
Some parts may be available from multiple regions, which can affect lead times and shipping costs.
Can I order online or by phone?
Both! You can shop and order at Western Tub and Pool via our online catalogue, by calling 1-855-248-0777, or by emailing fixmytub@gmail.com.
What if I don't know my part number?
No problem. Send us a photo of the part, along with your hot tub's make, model, and serial number, and our team will identify the correct replacement for you.
Why Shop with Western Tub and Pool?
Hard-to-Find Parts: We specialize in discontinued and specialty spa components that are difficult to source elsewhere.
International Shipping: We ship from warehouses across the U.S., Canada, Europe, and Asia to serve customers worldwide.
Expert Guidance: Not sure what you need? Our knowledgeable team will help you find the right part or retrofit solution.
Direct Support: Reach a real person by phone or email — no complicated ticketing systems.
Get the Right Part, the First Time
Don't waste time searching for a discontinued circuit board. Our team at Western Tub and Pool specializes in hard-to-find hot tub parts and will help you find the right retrofit solution for your Cal Spa.
Shop and order at Western Tub and Pool
[Call 1-855-248-0777] [Shop Online]
Can't find what you're looking for? Send us an email at fixmytub@gmail.com with your part number, or a photo of the part along with your hot tub's make, model, and serial number. We'll track it down for you.](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4506/6769/ELE09100330__16229.1786476673.PNG?c=2 "Cal Spa OC850R1A Circuit Board — Expert Replacement Parts
Your hot tub deserves the right fix. Western Tub and Pool supplies genuine and compatible Cal Spa circuit boards, so you can get back to soaking faster.
Shop and order at Western Tub and Pool
[Call us: 1-855-248-0777] [Email: fixmytub@gmail.com]
What You Need to Know About the OC850R1A Circuit Board
The Cal Spa OC850R1A Circuit Board (Part No. ELE09100330) is a key control component used across a wide range of Cal Spas hot tub models. It manages the core functions of your spa, including heating, jet control, and system diagnostics.
Important Notice: This board is no longer available as a standalone unit. In most cases, a retro-fit system replacement will work as an effective alternative. Contact our team to find the best retrofit option for your specific model.
Key Product Details
Specification
Details
Part Name
Cal Spa OC850R1A Circuit Board
Part Number
ELE09100330
Condition
New (Retrofit/Replacement)
Availability
Subject to warehouse region
Cross-Reference Numbers
OC850R1A, ELE09100330
Note on Dimensions and Weight: Dimensions and shipping weight vary depending on the retrofit kit supplied. Contact us directly for exact specifications before ordering.
Compatible Hot Tub Models
The OC850R1A circuit board and its compatible retrofit replacements are used across a broad range of Cal Spas models, including but not limited to:
Cal Spas series using the OC850 control system
Models paired with ELE09100330 control boards
Various Cal Spas spa and hot tub models from the late 1990s through mid-2000s production runs
Not sure if this part fits your model? Send us your hot tub's make, model, and serial number, and we'll confirm compatibility before you order.
[Email us your details]
Compatible Controls & Related Parts
This circuit board is associated with the following control systems and replacement parts:
Compatible Controls: OC850 series control systems
Cross-Reference Numbers: OC850R1A | ELE09100330
Related Repair Parts: Topside controls, heater elements, pumps, and sensors that work in conjunction with the OC850 control system
Browse our full catalogue online or call us to find all associated parts for your repair.
[View Our Online Catalogue]
Frequently Asked Questions
Is the OC850R1A circuit board still available as an original part?
No, this board has been discontinued by the manufacturer. However, in most cases a retrofit system replacement can restore full functionality to your spa. Our team will guide you through the best options for your model.
How do I know if this is the right part for my hot tub?
Check your existing circuit board for the part number OC850R1A or ELE09100330. If you're unsure, send us a photo of your board along with your spa's make, model, and serial number, and we'll verify the fit for you.
How long will shipping take?
Shipping times depend on which regional warehouse fulfills your order. Western Tub and Pool ships internationally from warehouses in the U.S., Canada, Europe, and Asia. The suffix on your part number indicates the region of origin:
U = United States
C = Canada
E = Europe
A = Asia
Some parts may be available from multiple regions, which can affect lead times and shipping costs.
Can I order online or by phone?
Both! You can shop and order at Western Tub and Pool via our online catalogue, by calling 1-855-248-0777, or by emailing fixmytub@gmail.com.
What if I don't know my part number?
No problem. Send us a photo of the part, along with your hot tub's make, model, and serial number, and our team will identify the correct replacement for you.
Why Shop with Western Tub and Pool?
Hard-to-Find Parts: We specialize in discontinued and specialty spa components that are difficult to source elsewhere.
International Shipping: We ship from warehouses across the U.S., Canada, Europe, and Asia to serve customers worldwide.
Expert Guidance: Not sure what you need? Our knowledgeable team will help you find the right part or retrofit solution.
Direct Support: Reach a real person by phone or email — no complicated ticketing systems.
Get the Right Part, the First Time
Don't waste time searching for a discontinued circuit board. Our team at Western Tub and Pool specializes in hard-to-find hot tub parts and will help you find the right retrofit solution for your Cal Spa.
Shop and order at Western Tub and Pool
[Call 1-855-248-0777] [Shop Online]
Can't find what you're looking for? Send us an email at fixmytub@gmail.com with your part number, or a photo of the part along with your hot tub's make, model, and serial number. We'll track it down for you.")
![Cal Spa Circuit Board ELE09100027 — Get Your Hot Tub Running Again
Is your Cal Spa hot tub not heating, not responding, or throwing error codes? A failed circuit board is one of the most common culprits — and the ELE09100027 is the OEM replacement that gets your spa back up and running fast. Shop and order at Western Tub and Pool, your trusted source for hard-to-find Cal Spas replacement parts.
Call us: 1-855-248-0777 | Email: fixmytub@gmail.com
[Shop This Part Now] [Call for Assistance]
What Is the Cal Spa Circuit Board ELE09100027?
The Cal Spa Circuit Board ELE09100027 is a genuine OEM-grade printed circuit board designed for Cal Spas hot tubs equipped with the CS501Z control box. This is the brain of your spa's control system — managing heat, jets, pumps, and all electronic functions. When it fails, your spa stops working. This board is the direct, factory-compatible replacement.
This is a brand new board, backed by Cal Spas' manufacturer's warranty.
Product Specifications
Specification
Details
Part Number
ELE09100027
Also Listed As
CALELE09100027
Balboa / OEM Reference Number
54512-01
Chip Numbers
GS501ZR2 / CS501Z1R1B
Compatible Control System
CS501Z
Condition
Brand New
Approximate Dimensions
11 inches wide x 5 inches high
Warranty
90-Day Cal Spas Manufacturer's Warranty
Brand
Cal Spas (Balboa-based system)
Important: Before ordering, please verify the chip ID number printed on your existing circuit board to confirm this is the correct replacement for your spa. Not sure? Send us a photo — we'll help you identify it.
Compatible Control Systems & Hot Tub Models
The ELE09100027 circuit board fits Cal Spas hot tubs that use the CS501Z control box. This control system was installed across a wide range of Cal Spas models. Compatible chip numbers include:
GS501ZR2
CS501ZR1B
CS501Z1R1B
Newer revisions may end in any letter (e.g., R1A, R1B, R1C, etc.)
Cal Spas models and series that commonly use the CS501Z control system include:
Cal Spas CS501Z Series Hot Tubs
Select models from the Cal Spas 500 Series
Various Cal Spas spa models equipped with the CS501Z control pack
Not sure if this board fits your spa? Locate your existing circuit board, check the chip ID label, and compare it with the numbers listed above. You can also call us at 1-855-248-0777 or email fixmytub@gmail.com with your spa's make, model, and serial number, and we'll confirm compatibility for you.
Why Order From Western Tub and Pool?
Finding the right circuit board for your Cal Spa doesn't have to be a headache. At Western Tub and Pool, we specialize in hard-to-find hot tub repair parts — including discontinued and OEM-grade circuit boards that most suppliers don't carry.
Genuine OEM-Compatible Part
The ELE09100027 is a factory-referenced replacement board — not a generic knockoff. It's built to match your spa's original control system specifications.
90-Day Manufacturer's Warranty
This board is covered by Cal Spas' own 90-day warranty, giving you peace of mind with your repair investment.
Expert Parts Assistance
Not sure this is the right part? Our team can help. Send us your spa's serial number, model, or a photo of your existing board, and we'll point you in the right direction.
Hard-to-Find Parts Specialists
We stock and source circuit boards, spa packs, and control systems that are difficult to find elsewhere. If it exists, we'll track it down.
How to Order or Get Help
Getting the right part is straightforward when you know where to look.
1. Confirm Your Part Number
Check the chip ID label on your existing circuit board. Look for: GS501ZR2, CS501ZR1B, or CS501Z1R1B.
2. Browse Our Online Catalogue or Call Us
Search our full catalogue for Cal Spas circuit boards, or speak directly with our parts team for personalized help.
3. Place Your Order
Order online or over the phone. We'll get your part processed and shipped promptly.
Frequently Asked Questions
How do I know if this circuit board fits my Cal Spa hot tub?
Locate the existing circuit board inside your spa's control box and find the chip ID label. If it reads GS501ZR2, CS501ZR1B, or CS501Z1R1B, this board is your match. Still unsure? Email us a photo of your board and spa serial number to fixmytub@gmail.com and we'll confirm it for you.
What does a faulty circuit board look like?
Common signs of a failed circuit board include: the spa not powering on, error codes on the topside panel, jets or heaters not responding to controls, or the spa cycling on and off unexpectedly.
Is the ELE09100027 a new or refurbished board?
This is a brand new circuit board — not refurbished or used.
What is the warranty on this board?
The ELE09100027 is backed by a 90-day Cal Spas manufacturer's warranty.
What if I can't find my chip ID number?
No problem. Send us a clear photo of your circuit board, along with your spa's make, model, and serial number, to fixmytub@gmail.com. Our team will identify the correct part for you at no charge.
Can I install this board myself?
Many experienced DIY spa owners successfully replace circuit boards themselves. However, if you're not comfortable working with electrical components, we recommend using a licensed spa technician.
Do you carry other Cal Spas circuit boards or spa parts?
Yes. Western Tub and Pool carries a wide range of Cal Spas replacement parts, including additional circuit boards, control packs, heaters, pumps, and more. Browse our online catalogue or call us to discuss your specific needs.
Can't Find the Part You Need?
We specialize in hard-to-find hot tub parts. If you're unsure which circuit board your Cal Spa requires, or if you're dealing with a discontinued or uncommon model, don't guess — reach out to us directly.
To get the fastest help, please have the following ready:
Your spa's make and model
Your spa's serial number (usually found on a sticker inside the equipment bay)
The chip ID number from your existing circuit board (if available)
Photos of your existing board (front and back) — these help us identify the correct replacement immediately
Contact Western Tub and Pool:
Phone: 1-855-248-0777
Email: fixmytub@gmail.com
Get Your Spa Back Up and Running Today
Don't let a failed circuit board keep you out of the water. The Cal Spa Circuit Board ELE09100027 is a direct, OEM-compatible replacement for Cal Spas hot tubs equipped with the CS501Z control system — and Western Tub and Pool has it in stock.
Shop and order at Western Tub and Pool today, or call our parts specialists for hands-on guidance.
1-855-248-0777 | fixmytub@gmail.com
[Order the ELE09100027 Now] [Browse Our Full Parts Catalogue] [Email Us for Help]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4433/6687/CSE09100027__59844.1784397662.PNG?c=2 "Cal Spa Circuit Board ELE09100027 — Get Your Hot Tub Running Again
Is your Cal Spa hot tub not heating, not responding, or throwing error codes? A failed circuit board is one of the most common culprits — and the ELE09100027 is the OEM replacement that gets your spa back up and running fast. Shop and order at Western Tub and Pool, your trusted source for hard-to-find Cal Spas replacement parts.
Call us: 1-855-248-0777 | Email: fixmytub@gmail.com
[Shop This Part Now] [Call for Assistance]
What Is the Cal Spa Circuit Board ELE09100027?
The Cal Spa Circuit Board ELE09100027 is a genuine OEM-grade printed circuit board designed for Cal Spas hot tubs equipped with the CS501Z control box. This is the brain of your spa's control system — managing heat, jets, pumps, and all electronic functions. When it fails, your spa stops working. This board is the direct, factory-compatible replacement.
This is a brand new board, backed by Cal Spas' manufacturer's warranty.
Product Specifications
Specification
Details
Part Number
ELE09100027
Also Listed As
CALELE09100027
Balboa / OEM Reference Number
54512-01
Chip Numbers
GS501ZR2 / CS501Z1R1B
Compatible Control System
CS501Z
Condition
Brand New
Approximate Dimensions
11 inches wide x 5 inches high
Warranty
90-Day Cal Spas Manufacturer's Warranty
Brand
Cal Spas (Balboa-based system)
Important: Before ordering, please verify the chip ID number printed on your existing circuit board to confirm this is the correct replacement for your spa. Not sure? Send us a photo — we'll help you identify it.
Compatible Control Systems & Hot Tub Models
The ELE09100027 circuit board fits Cal Spas hot tubs that use the CS501Z control box. This control system was installed across a wide range of Cal Spas models. Compatible chip numbers include:
GS501ZR2
CS501ZR1B
CS501Z1R1B
Newer revisions may end in any letter (e.g., R1A, R1B, R1C, etc.)
Cal Spas models and series that commonly use the CS501Z control system include:
Cal Spas CS501Z Series Hot Tubs
Select models from the Cal Spas 500 Series
Various Cal Spas spa models equipped with the CS501Z control pack
Not sure if this board fits your spa? Locate your existing circuit board, check the chip ID label, and compare it with the numbers listed above. You can also call us at 1-855-248-0777 or email fixmytub@gmail.com with your spa's make, model, and serial number, and we'll confirm compatibility for you.
Why Order From Western Tub and Pool?
Finding the right circuit board for your Cal Spa doesn't have to be a headache. At Western Tub and Pool, we specialize in hard-to-find hot tub repair parts — including discontinued and OEM-grade circuit boards that most suppliers don't carry.
Genuine OEM-Compatible Part
The ELE09100027 is a factory-referenced replacement board — not a generic knockoff. It's built to match your spa's original control system specifications.
90-Day Manufacturer's Warranty
This board is covered by Cal Spas' own 90-day warranty, giving you peace of mind with your repair investment.
Expert Parts Assistance
Not sure this is the right part? Our team can help. Send us your spa's serial number, model, or a photo of your existing board, and we'll point you in the right direction.
Hard-to-Find Parts Specialists
We stock and source circuit boards, spa packs, and control systems that are difficult to find elsewhere. If it exists, we'll track it down.
How to Order or Get Help
Getting the right part is straightforward when you know where to look.
1. Confirm Your Part Number
Check the chip ID label on your existing circuit board. Look for: GS501ZR2, CS501ZR1B, or CS501Z1R1B.
2. Browse Our Online Catalogue or Call Us
Search our full catalogue for Cal Spas circuit boards, or speak directly with our parts team for personalized help.
3. Place Your Order
Order online or over the phone. We'll get your part processed and shipped promptly.
Frequently Asked Questions
How do I know if this circuit board fits my Cal Spa hot tub?
Locate the existing circuit board inside your spa's control box and find the chip ID label. If it reads GS501ZR2, CS501ZR1B, or CS501Z1R1B, this board is your match. Still unsure? Email us a photo of your board and spa serial number to fixmytub@gmail.com and we'll confirm it for you.
What does a faulty circuit board look like?
Common signs of a failed circuit board include: the spa not powering on, error codes on the topside panel, jets or heaters not responding to controls, or the spa cycling on and off unexpectedly.
Is the ELE09100027 a new or refurbished board?
This is a brand new circuit board — not refurbished or used.
What is the warranty on this board?
The ELE09100027 is backed by a 90-day Cal Spas manufacturer's warranty.
What if I can't find my chip ID number?
No problem. Send us a clear photo of your circuit board, along with your spa's make, model, and serial number, to fixmytub@gmail.com. Our team will identify the correct part for you at no charge.
Can I install this board myself?
Many experienced DIY spa owners successfully replace circuit boards themselves. However, if you're not comfortable working with electrical components, we recommend using a licensed spa technician.
Do you carry other Cal Spas circuit boards or spa parts?
Yes. Western Tub and Pool carries a wide range of Cal Spas replacement parts, including additional circuit boards, control packs, heaters, pumps, and more. Browse our online catalogue or call us to discuss your specific needs.
Can't Find the Part You Need?
We specialize in hard-to-find hot tub parts. If you're unsure which circuit board your Cal Spa requires, or if you're dealing with a discontinued or uncommon model, don't guess — reach out to us directly.
To get the fastest help, please have the following ready:
Your spa's make and model
Your spa's serial number (usually found on a sticker inside the equipment bay)
The chip ID number from your existing circuit board (if available)
Photos of your existing board (front and back) — these help us identify the correct replacement immediately
Contact Western Tub and Pool:
Phone: 1-855-248-0777
Email: fixmytub@gmail.com
Get Your Spa Back Up and Running Today
Don't let a failed circuit board keep you out of the water. The Cal Spa Circuit Board ELE09100027 is a direct, OEM-compatible replacement for Cal Spas hot tubs equipped with the CS501Z control system — and Western Tub and Pool has it in stock.
Shop and order at Western Tub and Pool today, or call our parts specialists for hands-on guidance.
1-855-248-0777 | fixmytub@gmail.com
[Order the ELE09100027 Now] [Browse Our Full Parts Catalogue] [Email Us for Help]")
![Replace Your Cal Spa Circuit Board With Confidence
Your hot tub should work when you need it most. The Cal Spa C4001R1C Circuit Board (ELE09100250) is a new, direct replacement part that gets your spa back up and running fast — no guesswork, no hassle.
[Shop and Order at Western Tub and Pool]
What You're Getting
New, Not Refurbished
The C4001R1C is a brand-new replacement circuit board — not a rebuilt or refurbished unit. You get full functionality and peace of mind from the moment it arrives.
A Trusted OEM Cross-Reference
This board cross-references with ELE09100250 and is engineered to integrate seamlessly with compatible Cal Spas control systems. If your current board is failing, this is the part that brings your spa back to life.
Broad Model Compatibility
This circuit board is used across a wide range of Cal Spas hot tub models. Whether you have a classic unit or a more recent model, chances are this board is the right fit for your system. Not sure? Call us or send us your make, model, and serial number — we'll confirm compatibility before you order.
Ships From Multiple Regions
As an international e-tailer, Western Tub and Pool sources parts from warehouses across the globe to get your order to you as quickly as possible. To help you identify part origin, we use the following suffixes:
U – United States
C – Canada
E – Europe
A – Asia
Please note: some parts may be available from multiple regions. Shipping times and costs will vary based on the warehouse your order is fulfilled from.
Compatible Hot Tub Models
The Cal Spa C4001R1C Circuit Board (ELE09100250) is compatible with many Cal Spas models and control systems. Because compatibility can vary based on your spa's production year and configuration, we strongly recommend confirming your part number or contacting our team before ordering.
To confirm compatibility:
Check the part number on your existing circuit board
Note your spa's make, model, and serial number
Send us a photo of the existing board if the part number is unclear
Call us at 1-855-248-0777 or email fixmytub@gmail.com and we'll identify the right part for you.
Dimensions and Specifications
Specification
Details
Part Number
C4001R1C
Cross-Reference
ELE09100250
Condition
New
Compatible Brand
Cal Spas
Application
Hot Tub / Spa Circuit Board
Dimensions
Contact us to confirm for your specific unit
Weight
Contact us to confirm for your specific unit
Dimensions and weight may vary slightly depending on production batch and region of origin. Contact our team for precise specifications.
Frequently Asked Questions
How do I know if this circuit board is compatible with my hot tub?
The best way to confirm compatibility is to check the part number printed on your existing circuit board, or locate your spa's model and serial number (typically found on a label inside the equipment compartment). You can then call us at 1-855-248-0777 or email fixmytub@gmail.com with that information, and our team will verify the right fit before you order.
Is this a new part or a refurbished one?
This is a brand-new circuit board — not refurbished or rebuilt. You're getting a fresh unit straight from the manufacturer.
What does the suffix on my part number mean?
Western Tub and Pool ships from warehouses in multiple regions. Parts originating from the U.S. carry a U suffix, Canada a C, Europe an E, and Asia an A. Some parts are stocked in more than one region, which can affect shipping times and costs.
What if I'm not sure which part I need?
No problem. Take a clear photo of your existing circuit board (including any visible part numbers), note your spa's make, model, and serial number, and send it all to fixmytub@gmail.com. Our team will do the rest.
Do you ship internationally?
Yes. Western Tub and Pool is an international e-tailer. We ship to customers across North America and beyond. Shipping costs and delivery times will vary based on your location and the regional warehouse fulfilling your order.
Shop and Order at Western Tub and Pool
Ready to get your spa back in action? Our team is here to help you find the right part, confirm compatibility, and get your order on its way.
Call us: 1-855-248-0777
Email us: fixmytub@gmail.com
[Shop and Order at Western Tub and Pool]
Having trouble finding a hard-to-source part? Send us an email at fixmytub@gmail.com with your spa's make, model, serial number, and a photo of the part if possible. We specialize in hard-to-find hot tub and spa replacement parts and will do everything we can to track down what you need.](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4505/6768/ELE09100250__66128.1786475802.PNG?c=2 "Replace Your Cal Spa Circuit Board With Confidence
Your hot tub should work when you need it most. The Cal Spa C4001R1C Circuit Board (ELE09100250) is a new, direct replacement part that gets your spa back up and running fast — no guesswork, no hassle.
[Shop and Order at Western Tub and Pool]
What You're Getting
New, Not Refurbished
The C4001R1C is a brand-new replacement circuit board — not a rebuilt or refurbished unit. You get full functionality and peace of mind from the moment it arrives.
A Trusted OEM Cross-Reference
This board cross-references with ELE09100250 and is engineered to integrate seamlessly with compatible Cal Spas control systems. If your current board is failing, this is the part that brings your spa back to life.
Broad Model Compatibility
This circuit board is used across a wide range of Cal Spas hot tub models. Whether you have a classic unit or a more recent model, chances are this board is the right fit for your system. Not sure? Call us or send us your make, model, and serial number — we'll confirm compatibility before you order.
Ships From Multiple Regions
As an international e-tailer, Western Tub and Pool sources parts from warehouses across the globe to get your order to you as quickly as possible. To help you identify part origin, we use the following suffixes:
U – United States
C – Canada
E – Europe
A – Asia
Please note: some parts may be available from multiple regions. Shipping times and costs will vary based on the warehouse your order is fulfilled from.
Compatible Hot Tub Models
The Cal Spa C4001R1C Circuit Board (ELE09100250) is compatible with many Cal Spas models and control systems. Because compatibility can vary based on your spa's production year and configuration, we strongly recommend confirming your part number or contacting our team before ordering.
To confirm compatibility:
Check the part number on your existing circuit board
Note your spa's make, model, and serial number
Send us a photo of the existing board if the part number is unclear
Call us at 1-855-248-0777 or email fixmytub@gmail.com and we'll identify the right part for you.
Dimensions and Specifications
Specification
Details
Part Number
C4001R1C
Cross-Reference
ELE09100250
Condition
New
Compatible Brand
Cal Spas
Application
Hot Tub / Spa Circuit Board
Dimensions
Contact us to confirm for your specific unit
Weight
Contact us to confirm for your specific unit
Dimensions and weight may vary slightly depending on production batch and region of origin. Contact our team for precise specifications.
Frequently Asked Questions
How do I know if this circuit board is compatible with my hot tub?
The best way to confirm compatibility is to check the part number printed on your existing circuit board, or locate your spa's model and serial number (typically found on a label inside the equipment compartment). You can then call us at 1-855-248-0777 or email fixmytub@gmail.com with that information, and our team will verify the right fit before you order.
Is this a new part or a refurbished one?
This is a brand-new circuit board — not refurbished or rebuilt. You're getting a fresh unit straight from the manufacturer.
What does the suffix on my part number mean?
Western Tub and Pool ships from warehouses in multiple regions. Parts originating from the U.S. carry a U suffix, Canada a C, Europe an E, and Asia an A. Some parts are stocked in more than one region, which can affect shipping times and costs.
What if I'm not sure which part I need?
No problem. Take a clear photo of your existing circuit board (including any visible part numbers), note your spa's make, model, and serial number, and send it all to fixmytub@gmail.com. Our team will do the rest.
Do you ship internationally?
Yes. Western Tub and Pool is an international e-tailer. We ship to customers across North America and beyond. Shipping costs and delivery times will vary based on your location and the regional warehouse fulfilling your order.
Shop and Order at Western Tub and Pool
Ready to get your spa back in action? Our team is here to help you find the right part, confirm compatibility, and get your order on its way.
Call us: 1-855-248-0777
Email us: fixmytub@gmail.com
[Shop and Order at Western Tub and Pool]
Having trouble finding a hard-to-source part? Send us an email at fixmytub@gmail.com with your spa's make, model, serial number, and a photo of the part if possible. We specialize in hard-to-find hot tub and spa replacement parts and will do everything we can to track down what you need.")
